Cooling device for gas-engines.



J. A. CHARTER.

COOLING DEVIGE FOR GAS ENGINES.

APPLICATION FILED JULY 2a. 1908.

954,780. v I Patented A r.12,191 0.

' inder of the latter,

communicates freelyatits upper end with UNITED STATES PATENT OFFICEJAMES A onnnrnn, or cinc'neo, ILLINoIs, AssIGNo a r0 AUSTINMANUFACTURING COMPANY, or CHICAGO, ILLINOIS, A CORPORATION or ILLINoIs.

COOLING DEVICE FOR GAS-ENGINES;

Specification of Letters Patent. Patented Apr. 12, 191%).

Application filed July 28, 1908. SeriaLNo. 145,1781.

To all whom it may concern: I

Be it known that I, JAMns A. CHARTER, a citizen of the United States,residing at Chicago, in the county of Cook and State of Illinois, haveinvented certain new and useful Improvements in Cooling Devices for Gas-Engines,of which the following is a specifi cation. This inventionrelates to the art of in-v ternal combustionengines, and has referencemore particularly to a new and improved means for eifectingthe coolingof the cylinder of the engine, wherebyto increase its efficiency; v

Myimprovements belong to that type of cooling devices wherein apractically continuous circulation of the cooling medium through thecooling; jacket of the cylinder is maintained; and one object of theinvention is to provide a. means for the ready escape and disposition inthe cooling .water.

In carrying water tank suitably located with reference to the engine andpreferably below the cylstandpipe' of relatively large size on saidtank,

the atmosphere, a pipe leading from the weter-tank t'o the jacket of thecylinder, in

which pipe is preferably located the water- .forcingmeans, waterjackettappingand a return pipe from the the standpipe in such a wayas toallow the return water to descend freely into the tank, while any steamcarried thereby may freely escape through the open upper: end of thestandpipe.

Anotherfeature of the invention residesin separating the water'jacketsof the cylinder.

proper and cylinder-head and providing independent means for controllingthe circulation of water through each, so that the application of thecooling medium to both the head-and cylinder may be independentlyregulated as the conditions of service may require.

My invention will be readily understood.

when considered in connection withthe accompanying drawing, practicalmechanical and-iniwhich the figure is a side elevation of a'gas en hewith my improved'cooling devic'e' app ied thereto, the cylinder andcylinder-head being partially broken out to more clearly display thewater jacket.

of any steam that may forin v I other end apair of branches 14 and15leadout my invention I employ a which illustrates one embodimentthereof,

Referring to the drawing, 5 designatei that ortion of the frameconstituting the cylin er housing or shell of the cylinder water-jacket,and 6 indicates the cylinder proper secured therein.

7 designates as an entirety the cylinder head, which is internally coredto provide a space 8 for thecirculati'on of the cooling medium, andwhich is provided with 3. marginal flange 9 by which itis secured to theend of thecylindenhousing', as by bolts 10. The water spaces ofthecylinder and cylinder-head are entirely'separated. I 11 designates awater'tank, preferably located on a plane somewhat below that of thecylinder, and 12 designates a standpipe of relativelylarge diameter thatrises from the tank 11 and at its upper end is in free and opencommunication with the atmosphere.

.Leading from the bottom of-the water tank 11 is a water-supply pipe 13having at its inginto the water circulation spaces of thej'cylinder andhead, respectively. The branches 14 and 15 are equipped with controllingvalves 16 and 17, respectively.

'18 designates a water return pipe which communicates by branches 19 and20 with the water circulation spaces of the cylinder and head,respectivelyfThe other end of the pipe 18 is tapped into the standpipe12.

In the supply pipe.18 is a water-forcing device,-herein indicated as arotary pump 19, for maintaining the circulation of water.

In the operation of the device, water from the tank 11 is continuouslyforced through pipe 13 and its branches 14: and 15 into the watercirculation spaces of the cylinder and head, respectively, absorbing theheat generated in the latter, and flowing off through branch pipes 19and 20 and pipe 18 into the standpipe 12, through which it againdescends into the tank ll for re-use. The standpipe 12 is empty ofwatenas indicated in the drawing (excepting, of course, for the showerof return wate falling from the end of pipe 18); so that the water inthe tank 11 is at all times subjected only to at- ,mospheric pressureand not to the hydroreturn water to fall in a saower or spray from theend of he rot-urr pipe 18 to. the

top of the body of water in the tank 1 l. The circulating pump 19, itmay be noted, 1s

valveles's, which, by opening of-the valves 16 and 17, permits the waterto flow'baek- Wardly through the same when iti is idle; and thisfeature, in association with the non-continuous body of circulatingvwater as above described, is of importance in engines used on vehiclesor subjected to freezing weather, since, when the engine is idle,

the water from the jacket may bedrained engine, the circulation beingmaintained by heating up the water in the supply-pipe between the tankand the jacket vby the exhaust gases. My invention is radicallydistinguished from such a system in the fact that it does not employ asolid or uninterrupted body of circulating Water, and consequently ofnecessity employs a mechanical water-forcing device to maintain theflow.

By suitable regulation of the valves 16 and 17, any desired proportionsof the cool-' .ing water ma be'caused to flow through the jackets o thecylinder and head, re-

spectively, it being. found that with certain classes of fuelthe'cylinder-head can be, and should 'be, maintained at a much higher 1temperature than the cylinder, since there are no moving or slidingparts in the head which might be damaged or injured in re spect tooperation through excessive heat.

The standpipe 12 being of large diameter relative to the othercirculation pipes, the hot water, as soon as it is dis iharged into saidstandpipe, freely spreads .or separates itself in the latter, thusfacilitating the liberation of the steam I claim:

The combination with the cylinder and cylinder-head of a gas enginehaving noncommunicating,water-jackets, of a watertank, a stand-pipe onsaid water-tank open to the atmosphere, a water supply pipefrom saidtank having branches communicating with the water-jackets of saidcylinder and cylinder head,v respectively, a return pipe connecting intosaid stand-pipe and having branches communicating with saidwaterjackets, respectively, a pump in said supplypipc, and independentlyoperable controlling-valves in the branches of said supplypipe,respectively, substantially as described.

7 JAMES A. CHARTER. Witnesses:

S. T. MANN, CLARE L. RosENoW.

